当前我国大力发展西南地区客运专线项目建设，该地区属云贵高原，区内沟槽切割较强烈，喀斯特地貌和丘陵地貌发育，坡麓自然斜坡陡峻，植被覆盖良好，存在大量溶蚀洼地、漏斗、落水洞等岩溶地貌，隧道施工中围岩以石灰岩、白云岩、白云质灰岩-灰质白云岩、不纯碳酸盐岩为主，多形成充填或半充填溶洞，填充物具有复杂性和多样性，尤其以隧底隐伏岩溶探明及整治更为困难。本文以中铁十七局织毕项目吴家寨隧道DK344+290里程隧道隐伏岩溶整治为主要研究对象，对隐伏岩溶的形态和整治方案的优点、可靠性、施工工艺等方面加以论述，为公司目前少有的串珠型、大型隧底溶洞治理工作，积累施工经验。%At present, the passenger railway projects in southwest China is developing vigorously. The region belongs to Yunnan-Guizhou plateau, where groove cutting is strong, the karst landforms and hilly landscape develops, and the foot of the slope is high and precipitous. The vegetation is good and there are a lot of karst landform including uvala, funnel and sink. The surrounding rocks in tunnel construction are mainly limestone, dolomite, dolomitic limestone - limy dolomite and impure carbonate rocks, often forming filling or half filling cavity. The filler has complexity and diversity. The tunnel botom hidden karst ascertain and control are especially difficult. Based on CR17 BG Zhijin-Bijie Project Wujiazhai Tunnel DK344+290 mileage tunnel hidden karst treatment, this article analyzes the form of hidden karst, the advantages, reliability, and construction technology of the treatment scheme to accumulate construction experience for the treatment of beading and big tunnel bottom karst cave treatment.
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